Some configuration help and a few questions

I am installing Litespeed on a new server. I decided to try v3 beta as the new server is 64 bit OS.
Very easy install! Went well
I have read that it already contains opcode cache but I don't see anything in phpinfo.php that shows it running. This can be seen here:http://198.65.115.221/phpinfo.php

I did attempt to install PHP 5.2.0 but ended up with blank pages. I am using an old version of VB though and think that may be the problem. I will try that again after upgrading VB.

I may have messed up a setting for apc when I did that. I am getting this in the error log:
[10.1.1.1:4323-0#_AdminVHost] [STDERR] PHP Warning: Unknown(): Unable to load dynamic library './apc.so' - ./apc.so: cannot open shared object file: No such file or directory in Unknown on line 0

I have checked php.ini and no mention of apc.so so I can't figure out where it is calling it from

I have copied most of the configuration settings from the old, much less powerful server and wondered if I should change anything. Here are the current settings for my main forum:

Better stay with PHP 4 if PHP5 is not really required. PHP4 is faster.
What you need is to setup a opcode cache like APC.
APC binary for php 4.4.4 is available under lsws/lib/ directory.
You can modify the php.ini showed in the phpinfo page to load the APC extension.

The APC related error message probably is what happened before installing those Zend extensions. Not important.

I decided I didn't want to start a new server up with existing problems so I removed everything, lsws, zend optimizer etc, got rid of all php.ini's etc
I did a routine lsws install, setting the optimizer option to install apc.
I then ran the zend optimizer install.
I am again seeing the same error in the log although the IP and and port seem to have changed